A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
HYDRAULIC DRIVING EQUIPMENT OF ELECTRIC HYDRAULIC WORK MACHINE
PROBLEM TO BE SOLVED: To make it possible for a hydraulic driving equipment of an electric hydraulic work machine that rated voltages of various electric equipment such as an electrical storage device and like are identically corresponding to those of electric hydraulic work machines operable with less power and time required to reach predetermined speeds for each of actuators of the electric hydraulic work machine is extended by preventing any one of power storage conditions in a plurality of electrical storage devices from being substantially lowered when the electric hydraulic work machine is operated.SOLUTION: A controller 50 is provided with a virtual restricting torque computing section 51 and motor speed control sections 52,53, the motor speed control sections 52, 53 being provided with variable power control tables 52r, 53r, to change limit values of virtual storage capacities q1*limit, q2*limit of the variable power control tables 52r, 53r so as to equalize power storage conditions of electrical storage devices 170, 270.SELECTED DRAWING: Figure 1
【課題】電動式油圧作業機械の油圧駆動装置において、蓄電装置などの種々の電気機器の定格電圧をより小さな馬力で済む電動式油圧作業機械のものと共通化できるとともに、電動式油圧作業機械の稼働に伴い、複数の蓄電装置の内いずれか一つの蓄電状況だけが著しく低下することを防止し、電動式油圧作業機械の各アクチュエータが所定のスピードを得られる時間を延長することができるようにすることである。【解決手段】コントローラ５０に仮想制限トルク演算部５１と電動機回転数制御部５２，５３を設け、電動機回転数制御部５２，５３に可変馬力制御テーブル５２r，５３rを設け、蓄電装置１７０，２７０の蓄電状態がそれぞれ等しくなるように可変馬力制御テーブル５２r，５３rの仮想容量の制限値q1*limit，q2*limitを変更する。【選択図】図１
HYDRAULIC DRIVING EQUIPMENT OF ELECTRIC HYDRAULIC WORK MACHINE
PROBLEM TO BE SOLVED: To make it possible for a hydraulic driving equipment of an electric hydraulic work machine that rated voltages of various electric equipment such as an electrical storage device and like are identically corresponding to those of electric hydraulic work machines operable with less power and time required to reach predetermined speeds for each of actuators of the electric hydraulic work machine is extended by preventing any one of power storage conditions in a plurality of electrical storage devices from being substantially lowered when the electric hydraulic work machine is operated.SOLUTION: A controller 50 is provided with a virtual restricting torque computing section 51 and motor speed control sections 52,53, the motor speed control sections 52, 53 being provided with variable power control tables 52r, 53r, to change limit values of virtual storage capacities q1*limit, q2*limit of the variable power control tables 52r, 53r so as to equalize power storage conditions of electrical storage devices 170, 270.SELECTED DRAWING: Figure 1
【課題】電動式油圧作業機械の油圧駆動装置において、蓄電装置などの種々の電気機器の定格電圧をより小さな馬力で済む電動式油圧作業機械のものと共通化できるとともに、電動式油圧作業機械の稼働に伴い、複数の蓄電装置の内いずれか一つの蓄電状況だけが著しく低下することを防止し、電動式油圧作業機械の各アクチュエータが所定のスピードを得られる時間を延長することができるようにすることである。【解決手段】コントローラ５０に仮想制限トルク演算部５１と電動機回転数制御部５２，５３を設け、電動機回転数制御部５２，５３に可変馬力制御テーブル５２r，５３rを設け、蓄電装置１７０，２７０の蓄電状態がそれぞれ等しくなるように可変馬力制御テーブル５２r，５３rの仮想容量の制限値q1*limit，q2*limitを変更する。【選択図】図１
HYDRAULIC DRIVING EQUIPMENT OF ELECTRIC HYDRAULIC WORK MACHINE
電動式油圧作業機械の油圧駆動装置
TAKAHASHI KIWAMU (author) / TAKISHITA TATSUO (author) / YUGAMI MASAYUKI (author) / NAKAYA KENICHIRO (author) / MAEHARA TAHEI (author)
2018-09-27
Patent
Electronic Resource
Japanese
HYDRAULIC DRIVE DEVICE FOR ELECTRIC HYDRAULIC WORK MACHINE
| European Patent Office | 2019
HYDRAULIC DRIVE DEVICE FOR ELECTRIC HYDRAULIC WORK MACHINE
| European Patent Office | 2018